Gastro-oesophageal junction high pressure zone (HPZ) characteristics of normal subjects and patients with hiatus hernia
| Normal subjects | Hiatus hernia | ||||
|---|---|---|---|---|---|
| HPZ 1 (proximal) | HPZ 2 (hiatal) | ||||
| Maximal pressure (mm Hg) | 28 (1.2) | 17 (1.0)1-150 | 13 (2.0)1-150 | ||
| Maximal pressure (mm Hg, referenced to gastric pressure) | 17 (1.0) | 7 (0.2)1-150 | 3 (0.2)1-150 | ||
| Percentage radial asymmetry | 34 (2) | 3 (1)1-150 | 52 (2)1-150 | ||
| Length of high pressure zone (cm) | 4.0 (0.2) | 2.8 (0.2)1-150 | 2.7 (0.3)1-150 | ||
All values are mean (SEM).
↵1-150 p<0.05 versus normal.